How to measure and build a new staircase...

[Halfaudio]

Hello i have a task on my hands but i fear i have overestimated my abilities... And i can't just admit to my wife that i feel defeated.
I need help measuring and calculating the new staircase so i don't screw up.
It starts with left winder then straight up to landing left turn and straight up. I need to understand how to measure it correctly.

I have all the materials and tools that are needed for the job except the one that types this is a bit dull.. Have 3 books that explain a lot but not fully i have a lot of experience in diy and beyond and so far i have done half the house renovation on my own.
I don't have the money for traders because of the covid as self employers had a bit of ruff time and my kids are starting to hate the ladders..
Much appreciated...

 

[Halfaudio]

 

[Halfaudio]

I see very scary...
FFL to FFL - 2652 (Rise)
Run - 3035
Headroom is more than enough to please code 2400 being the lowest point measured from old stairs and new ones will match pretty close anyway. (2m minimum)
Am i right to assume this if not i will need to add headroom calculations.

This is what i came up with
2652/220=12.05 (220 is maximum permitted rise)
2652/12=221 (too big)
2652/13=204 (good in limits)
So 13 steps and rise 204mm
13*204=2652mm (confirmed)

Tangent of 42 - (bein max permitted pitch angle on Domestic staircases)
204/42 tan =226.56
Round to 227
227*42 tan =204.39
Rise = 204mm Going 227mm

Formula (2R+G=550-700)
2*204+227=635 (Dimensions between rise and going satisfies code 550-700)

Next should be headroom calculations but in my case it is not an issue at all.
Is this correct or am i not getting this right?

Solid pine stringers 44mm
Solid pine risers 20mm
Engineered pine treads 27mm
Newels 90mm/90mm
Square pine balusters

 

[cdbe]

Your maths may be better than mine, or not.
Anyway, I did the basics - rise, going, number of steps etc then I drew it on the wall to make sure it worked in practice. Then I positioned a stringer against the wall in the right place (fortunately mine was just a straight run) and marked all the treads and risers before getting the router going. I ended up with a great staircase, very satisfying when you hammer those wedges in and you hear that noise that tells you they're nice and tight.

 

[Halfaudio]

Your maths may be better than mine, or not.
Anyway, I did the basics - rise, going, number of steps etc then I drew it on the wall to make sure it worked in practice. Then I positioned a stringer against the wall in the right place (fortunately mine was just a straight run) and marked all the treads and risers before getting the router going. I ended up with a great staircase, very satisfying when you hammer those wedges in and you hear that noise that tells you they're nice and tight.

Not a bad idea i would be happy with just a straight flight up... I got a bit of a help from a person who is skilled at this and hi said the calculations are good but it wont fit in the given space.. So after a while i got an option to stay in 42 pitch angle i have to have two left winders with 3 steps in each.
I am crying from the inside, words can't describe how terrified i am but obviously i have to keep my cool... I have no choice now anyway..

 

[foxhole]

I used one of the many online calculators, just enter height and dimensions of opening and will provide all the measurements for you .

 

[johnny2007]

Approach a stairs company online, they will send you a quote with staircase design for free.
You just provide measurements.
I used starstairs a few years ago

 

[johnny2007]

Approach a stairs company online, they will send you a quote with staircase design for free.
You just provide measurements.
I used starstairs a few years ago

I meant stairbox.com